The usage or vocabulary that is characteristic of a specific group of people.
The immigrants spoke an odd dialect of English.
2. Idiom NounIdiomatic Expression, Phrasal Idiom, Phrase, Set Phrase
An expression whose meanings cannot be inferred from the meanings of the words that make it up.
Characteristic - a distinguishing quality.
It - Used of a nonhuman entity; "It makes no odds to me".
Make - act in a certain way so as to acquire; "make friends".
People - (plural) any group of human beings (men or women or children) collectively; "What would she think ?".
That - referring to the farther one; "That`s the way".
Up - raise; "up the ante".
Whose - interrogatively; "Whose is this ?".